Peng Weizhong, Yuan Yuting, Huang Chao, Wu Yulong, Xiao Zhaohui, Zhan Guanghui
State Key Laboratory of Marine Resource Utilization in South China Sea, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.
Molecules. 2023 Jul 28;28(15):5736. doi: 10.3390/molecules28155736.
The development of efficient electrocatalysts for hydrogen evolution reactions is an extremely important area for the development of green and clean energy. In this work, a precursor material was successfully prepared via electrodeposition of two doping elements to construct a co-doped cobalt hydroxide electrocatalyst (Ru-Co(OH)-Se). This approach was demonstrated to be an effective way to improve the performance of the hydrogen evolution reaction (HER). The experimental results show that the material exhibited a smaller impedance value and a larger electrochemically active surface area. In the HER process, the overpotential was only 109 mV at a current density of 10 mA/cm. In addition, the doping of selenium and ruthenium effectively prevented the corrosion of the catalysts, with the (Ru-Co(OH)-Se) material showing no significant reduction in the catalytic performance after 50 h. This synergistic approach through elemental co-doping demonstrated good results in the HER process.
开发用于析氢反应的高效电催化剂是绿色清洁能源发展的一个极其重要的领域。在这项工作中，通过电沉积两种掺杂元素成功制备了一种前驱体材料，以构建共掺杂氢氧化钴电催化剂（Ru-Co(OH)-Se）。该方法被证明是提高析氢反应（HER）性能的有效途径。实验结果表明，该材料具有较小的阻抗值和较大的电化学活性表面积。在HER过程中，在电流密度为10 mA/cm时过电位仅为109 mV。此外，硒和钌的掺杂有效地防止了催化剂的腐蚀，（Ru-Co(OH)-Se）材料在50小时后催化性能没有明显下降。这种通过元素共掺杂的协同方法在HER过程中显示出良好的效果。
